PEX ring: 1.Free samples are available 2.Certification:ISO9001,ISO14001,TS16949,NSF,ROHS and CTI test 3.Product insurance Structure:Features:· Narrow Band: concentrates transmission of clamping force, less weight · Stepless over 360°: uniform compression or uniform surface pressure· Clamp ear: compensates for component tolerance, adjustable surface pressure· Dimple: increases clamping force, ...